Stuck in her apartment because she's pregnant, reporter Jules is bored and restless. One day she discovers that she is able to pick up her neighbor's phone calls on her baby monitor. She hears talking that makes her believe one of her neighbors, Monk, is a murderer. The police are non-responsive and even Lily is skeptical. Later that night another one of her neighbors, Irina, dies. Instead of being suspicious of Monk, the police make Jules, who had a history of run-ins with the dead woman, their main suspect. Jules is convinced that someone in the building is the killer. The twisting path to the truth results in a surprise ending.